Madoko is a fast markdown processor for writing professional articles, books, manuals, webpages and presentations, with a focus on simplicity and plain text readability.

With Madoko you can write complex documents completely in markdown and get beautiful PDF and HTML output.

Raneto is an open source Knowledgebase platform that uses static Markdown files to power your Knowledgebase.

Abricotine is an open-source markdown editor built for desktop.

If you need to convert files from one markup format into another, pandoc is your swiss-army knife. Pandoc can convert documents in markdown, reStructuredText, textile, HTML, DocBook, LaTeX, MediaWiki markup, TWiki markup, OPML, Emacs Org-Mode, Txt2Tags, Microsoft Word docx, LibreOffice ODT, EPUB, or Haddock markup